Pneumatic Anti-Corrosion Butterfly Valve

Pneumatic corrosion-resistant butterfly valves, also known as pneumatic lined corrosion-resistant butterfly valves, feature a thick layer of fluoroplastic lining on all flow-path components that come into contact with the pipeline medium (such as the valve body inner wall, disc, and seat), providing exceptional corrosion resistance and wear resistance.
The valve seat and disc of the pneumatic PTFE-lined butterfly valve are entirely constructed from PTFE, effectively preventing corrosion of components like the valve shaft by media within the valve cavity. Pneumatic fluoroplastic-lined butterfly valves are categorized by connection type into clamp-type and flanged-type variants. Depending on operational requirements, either on/off or modulating actuators can be selected to achieve rapid media isolation or proportional flow regulation. These valves are widely applicable for corrosive fluids and strong acids/alkalis at ambient temperatures and pressures, with a maximum operating temperatu

Detail

Parameters

Product Name: Pneumatic Anti-Corrosion Butterfly Valve

Valve Model: D671F46, D641F46, D671F4, D641F4

Nominal Diameter Specification: DN50～DN1200

Structure Type: Center-line type, Wafer type, Flange type

Valve Body Material: Cast Steel WCB, Stainless Steel 304, Stainless Steel 316 (Note: The original "31" is supplemented to "316" as it is a common stainless steel grade; if it is indeed "31", it can be adjusted to "Stainless Steel 31")

Nominal Pressure: PN6, PN10, PN16

Applicable Temperature: -20℃～180℃

Application Range: Weakly corrosive fluids, strong acid media, etc.

Product Features: Good sealing performance, with super strong corrosion resistance and wear resistance

Nominal Diameter	DN50～DN1200(mm)
Pressure Class	PN0.6, 1.0, 1.6MPa
Connection Method	Wafer type, Flange connection
Actuation Method	Pneumatic control, compressed air 4-7bar, can be equipped with manual device (Note: The original "*" is corrected to "control")
Applicable Temperature	Polytetrafluoroethylene (PTFE): -20℃～180℃
Leakage	Compliant with standards (can achieve zero leakage)
Sealing Structure	Semi-PTFE-lined sealing, Full-PTFE-lined sealing
Working Occasions	Weakly corrosive fluids, strong acid media, etc. (normal temperature & normal pressure, normal temperature & low pressure occasions)
Accessory Options	Positioner, solenoid valve, air filter regulator, lock-up valve, travel switch, valve position transmitter, handwheel mechanism, etc.
Control Method	On-off cut-off(two-position on-offcontrol）, regulating type (positioner with 4～20mA analog signal) (Note: The original "*" is corrected to "control")